Calculators

Convert across 15 categories and 100+ units — length, mass, temperature, data, fuel economy and more.

Eight percentage scenarios in one place — percent of, change, discount, tax, tip, markup, compound growth.

Multi-game server RAM calculator. Pick a game, set players and load, get a recommended GB allocation with a base/players/mods breakdown. Covers Minecraft (Java + Bedrock), Hytale, CS2, Unturned, ARK, Rust, Valheim, Project Zomboid, 7 Days to Die, Terraria.

Compute exact age, lifetime totals, upcoming birthdays, and the gap between any two dates with weekend-aware business days.

Calculate monthly payments, amortization, affordability, and refinance savings — with taxes, PMI, HOA, and extra-payment scenarios.

Parse any date or timestamp, then preview it in 30+ output formats — ISO, RFC, locale, Unix, Excel, custom tokens, and side-by-side timezones.

Compute periodic payments, amortization schedules, total interest, and run extra-payment scenarios — with charts and CSV export.

Five randomness tools in one: number generator, dice roller, coin flip, decision wheel, and random picker. Web Crypto–backed, unbiased.

Calculate tips with country presets, tax handling, service quality, split, round-up, and itemized mode.

Compute BMI with a visual WHO scale, ideal weight range, body surface area, BMR/TDEE, and daily calorie targets.

Pin every city you work with, drag a shared time slider, and find the meeting hour that works for everyone.

Full descriptive statistics — mean, median, variance, skewness, kurtosis, quartiles, outliers, histogram and box plot.

Find the gap between two dates, add or subtract durations, and run a live countdown — with business days, holidays, ISO weeks, and timezone-aware math.

Convert between binary, octal, decimal, and hex with full BigInt support, two's complement, and bitwise operators.

Convert Unix seconds, Unix milliseconds, and ISO timestamps into human-readable forms instantly.

Convert fractions to decimals, percentages, ratios, and mixed numbers — simplify, compare, and do arithmetic with step-by-step explanations.

Convert between Arabic and Roman numerals with strict validation, vinculum support, and a built-in date formatter.