June 2026

Options Profit Calculator

Calculate and visualize your options trading profits and losses instantly. Interactive visual payoff matrix for Calls, Puts, Spreads, and advanced strategies. 100% client-side and free.

Dice Roller

Roll virtual dice online instantly. Supports D4, D6, D8, D10, D12, D20, and custom dice counts. Perfect for tabletop RPGs, board games, and random decisions. 100% free and fast.

llms.txt Generator

Create a standard /llms.txt file for your website instantly. Guide LLMs, AI agents, and search engines to crawl and understand your content perfectly. 100% client-side, secure, and free.

Free QR Code Generator

Generate high-quality custom QR Codes instantly for URLs, text, Wi-Fi, and vCards. 100% client-side processing ensuring your data never leaves your browser. Fast, secure, and completely free.

Barcode Generator for Web Free Online

Create professional barcodes for free with our online generator. Fast, easy, and supports multiple formats like EAN, UPC, QR, and Code 128. No registration required.

Regex Generator

Generate, test, and understand regular expressions instantly with our free online Regex Generator. Build complex regex patterns using natural language or simple visual controls. 100% client-side and privacy-friendly.

Mouse Click Test

A fully local, browser-native CPS counter and double-click diagnostic tool. Evaluate mouse click response speed and precisely identify hardware chatter without any input latency.

Touch Screen Test

Works fully locally in your browser—this multi-touch diagnostic tool lets you draw freely to find dead zones, log active touch inputs, and test hardware tracking with zero lag at all times.

Screen Refresh Rate Test

100% local, hardware-driven monitor Hz tester. Benchmark your display FPS and detect frame skipping in real time with zero lag and zero extension bloat.

JWT Debugger & Signer

All processing runs locally inside your browser with this JWT tool. Quickly decode, tweak and sign tokens using HS256, RS256 or ES256. We never log data on servers, and there’s zero lag at every step.

Client-Side Large File PII Masker

100% client-side browser anonymizer for large files. Stream CSVs and logs to erase emails, IPs and phone data, with zero server uploads and no input latency.

Web Crypto Key and Pair Generator

100% client-side cryptographic key utility. Generate RSA-PSS, ECDSA, and Ed25519 pairs or AES symmetric keys with instant JWK export.

Stone Calculator

Heavy-duty aggregate estimator for gravel, crushed rock, or river stone. Input dimensions to output exact cubic yards and total tons needed under a millisecond.

Stair Stringer Calculator

Heavy-duty stair layout tool. Enter total rise to map out exact tread, riser, and stringer board cuts with built-in IRC code safety alerts.

Google Maps Distance Calculator

Figure out the exact driving or straight-line distance between any two places. Just type in the locations to nail your trip mileage in a split second.

Distance Formula Calculator

Stop messin' around with negative numbers and square roots. Just punch in your X and Y coordinates to nail the exact distance instantly.

Volume of Triangular Prism Calculator

Skip the formula headache. Just enter the triangle dimensions and prism length for an instant, precise volume.

Volume of Drum Calculator and Formula

Easily figure out how many gallons or liters are inside any barrel or 55-gallon drum. Just enter the dimensions to get the exact volume in a split second.

Volume of Cone Calculator

Stop messing around with fractions and pi. Just punch in the height and radius (or diameter) to nail the exact volume of any cone or funnel.

Volume of Sphere Calculator

Figure out the exact volume of any ball or round tank in a split second. Put in the radius, diameter, or even circumference, and we’ll handle the math.

Calculation Volume of Cylinder

Stop stressing over geometry homework or tank capacity. Just punch in the height and radius (or diameter) to nail the exact volume.

Milliliters to Ounces Calculator

Milliliters to Ounces Calculator provides instant, bi-directional volume conversion. Easily convert ml to fluid oz or fluid ounces to ml with quick presets for 30ml, 100ml, and 60 oz.

Grams to Ounces Calculator

Grams to Ounces Calculator provides instant, bi-directional weight conversion. Easily convert grams to ounces (g to oz) or ounces to grams, including common presets like 100g, 200g, and 250g.

kg to lbs Calculator

Input kilograms or pounds to instantly convert between them with exact decimal precision and quick common weight reference charts.

Area Calculator

Input your dataset with commas, spaces, or lines to instantly calculate exact sample and population variance with step-by-step mathematical formulas.

Variance Calculator

Input your dataset with commas, spaces, or lines to instantly calculate exact sample and population variance with step-by-step mathematical formulas.

Standard Deviation Calculator

Stop squaring deviations by hand. Input your raw data with commas, spaces, or lines to instantly calculate exact sample and population standard deviation with step-by-step formula breakdowns.

Mean Calculator

Stop sorting data datasets by hand. Input your raw numbers with commas, spaces, or lines to instantly calculate the exact mean, median, mode, and range with clear step-by-step sorting guides.

Log Calculator

Free online log calculator to solve logarithms with any base. Easily calculate log base 2, log base 10, and natural log (ln) with step-by-step solutions.

Molarity Calculator

Stop struggling with molecular weight conversions. Input any three known variables to instantly solve for mass, solution volume, or molar concentration with exact metric unit adjustments.

Slope Calculator

Stop guessing linear equations and roofing angles. Input coordinate points, line intercepts, or rise and run dimensions to instantly calculate exact slope, line equations, and roof pitch.

Square Root Calculator

Stop guessing radical values. Input any positive real number to instantly calculate its exact square root, identify perfect squares, and explore the classic step-by-step long division method.

Abv Calculator

Stop guessing your brew's strength. Input your original and final gravity, or mix your cocktail ingredients to instantly calculate the exact Alcohol by Volume (ABV) with advanced temperature correction.

Pythagorean Theorem Calculator

Stop struggling with square roots. Input any two known sides of a right triangle to instantly calculate the missing length and angles with clear step-by-step formulas.

Timecard Calculator

Stop calculating employee hours by hand. Input clock-in, clock-out, and lunch break times to instantly track regular hours, overtime, and total weekly payroll hours.

Square Footage Calculator

Need to find square footage? Use our free square footage calculator to get instant results, or learn how to calculate square footage of a room or house manually.

Fraction Calculator

Instantly add, subtract, simplify, or convert mixed fractions and decimals into clean fractions with exact step-by-step solutions. Stop struggling with tape measures and math homework.

Final Grade Predictor

Free online grade calculator. Quickly calculate your current course grade, test averages, and final exam scores required using custom weights.

One Rep Max Calculator

Free online 1 rep max calculator. Estimate your 1RM, bench press, and squat max rep lifting capacity instantly using Epley and Brzycki formulas.

Gematria Calculator

Use our free, simple online Gematria calculator to find the meaning of your birthday or names. Supports Hebrew, Greek, and Jewish Gematria decodings instantly.

Laser Cleaning Parameter and Efficiency Calculator

Calculate laser cleaning efficiency, area coverage, overlap rates, and energy density instantly. Optimize your laser surface preparation and rust removal parameters

Scaffolding and Fall Clearance Calculator

Input your lanyard length, decelerating distance, and worker height to instantly calculate the required safe fall clearance under OSHA standards before erecting scaffolding.

Pallet CBM and Container Loading Calculator

Input your pallet dimensions and select standard shipping containers to instantly calculate total CBM, weight distribution, and maximum loading capacity.

US Truck Bridge Formula Calculator

Calculate the legal maximum gross weight for trucks on US highways using the Federal Bridge Formula B. Ensure DOT compliance by checking axle spacing and axle counts instantly.

Sprinkler Precipitation Rate Calculator

Calculate the exact precipitation rate and spacing for your irrigation system. Support square and triangular sprinkler layouts to prevent overwatering and optimize uniform distribution.

Epoxy Resin Coating and Mixing Calculator

Calculate the exact amount of epoxy resin needed for your project. Estimate coverage volume for tables or floors, and get the precise A and B mixing ratio by weight or volume.

Conveyor Belt Motor Power & Tension Calculator

Calculate the required motor power, driving tension, and peak tension for belt conveyors. Ensure accurate mechanical specifications for your material handling systems instantly.

Sheet Metal Bend Allowance & Deduction Calculator

Calculate sheet metal bend allowance, bend deduction, and flat pattern length instantly. Supports custom K-Factor, material thickness, and bend angles for precision fabrication.

Solar Wire Size Calculator

Calculate the correct wire size (AWG or mm²) for your solar panel system. Prevent excessive voltage drop based on system voltage, current, and cable run length.

AI API Cost & Token Calculator

Estimate and compare API costs across OpenAI, Anthropic, and Google Gemini. Input your prompt text or token count to calculate input/output expenses instantly.

Self-Employed Tax Calculator

Calculate your self-employment tax, federal income tax, and net take-home pay. Input your 1099 gross income and business expenses to estimate your quarterly tax payments instantly.

Small Business Tax Credit Estimator

Estimate your eligible federal tax credits using our Small Business Tax Credit Estimator. Instantly check qualification for R&D, ERTC, and healthcare tax credits.

Fence Material Calculator

Calculate the exact amount of fencing materials required for your project. Instantly estimate the number of posts, rails, pickets, and gates needed based on your fence length.

Independent Contractor vs. Employee Test

Determine if a worker is an independent contractor or an employee using our compliance test. Based on IRS and DOL guidelines to help you avoid misclassification penalties.

FinCEN BOI Reporting Deadline

Calculate your official FinCEN BOI reporting deadline based on your company's registration date. Avoid $500/day fines with our simple CTA compliance tracker for US entities.

SaaS Valuation Calculator

Estimate your SaaS company's market value based on ARR, growth rate, and churn. Get an instant valuation report using industry-standard revenue multiples.

Fiber Laser Cutting Speed Chart

Access the most accurate fiber laser cutting speed charts for various materials including Carbon Steel, Stainless Steel, and Aluminum across different power levels.

Battery Backup Runtime Calculator

Calculate how long your battery backup or UPS will last based on load, battery capacity, and efficiency. Ensure your critical systems stay powered during outages.

Lead Conversion Calculator

Calculate your lead-to-customer conversion rate and identify gaps in your sales funnel. Optimize your marketing spend and improve sales team performance instantly.

CAC Calculator

Calculate your Customer Acquisition Cost (CAC) by factoring in ad spend, sales salaries, and overhead. Optimize your marketing efficiency to improve business profitability.

Expansion Revenue Calculator

Calculate the revenue generated from existing customers through upsells and cross-sells. Track your expansion MRR to improve business health and net retention.

ARR Calculator

Calculate your Annual Recurring Revenue (ARR) based on MRR or subscription data. Project long-term growth and estimate your business valuation instantly.

MRR Calculator

Calculate your Monthly Recurring Revenue (MRR) and track subscription growth. Understand your Net MRR, Churn impact, and expansion revenue instantly.

Concrete Calculator

Calculate the volume of concrete needed for your project in yards or bags. Ideal for slabs, pads, and blocks, with built-in cost estimation for accurate budgeting.

Compound Interest Calculator

Estimate the future value of your investments with our compound interest calculator. Factor in monthly contributions and compounding frequency to reach your financial goals.

Calorie Calculator

Calculate your daily calorie needs based on your TDEE and BMR. Get precise targets for weight loss, maintenance, or muscle gain using scientific formulas.

Blue Light Exposure Calculator

Estimate your daily blue light exposure from digital devices and understand its potential impact on your circadian rhythm and eye health.