Calculators — 11 Free Online Tools
11 free online calculators. No signup required.
Free online calculators for everyday math: basic arithmetic, BMI, percentage, age, dates, and tips. No signup, no ads, browser-based.
Age Calculator - Years, Months, Days & Birthday
Free age calculator. Calculate your exact age in years, months, days, hours. See next birthday countdown and milestone dates. No signup required.
Calorie Calculator - Free TDEE BMR & Macro Calculator
Free calorie calculator. Calculate your TDEE, BMR, and optimal macros for weight loss, maintenance, or muscle gain. Mifflin-St Jeor equation, no signup, 100% private. AI cannot compute accurate metabolic formulas.
Date Calculator - Days Between & Date Arithmetic
Free online date calculator. Calculate days between dates, add subtract days/weeks/months/years, count business days. 100% private browser processing. AI hallucinates date math - we deliver deterministic results.
Days Until Calculator - Countdown to Any Date
Free days until calculator. Countdown to any date: Christmas, birthday, holiday, or event. See how many days, hours, minutes left. No signup required.
Free BMI Calculator - Body Mass Index Checker
Free BMI calculator to check your body mass index. Supports metric and imperial units. Instant results with health category classification. No signup required.
Free Online Calculator - Math Problem Solver
Free online calculator with scientific functions, unit conversion, loan calculator, and BMI calculator. No signup required, works in any browser.
Free Tip Calculator - Quick & Easy Restaurant Tip Tool
Free tip calculator for restaurants. Calculate tip amount, split bills, and see per-person cost. Works offline, no signup required. Instant results.
Grade Calculator - Weighted Average, Final Exam & GPA
Free grade calculator. Calculate weighted average grades, what you need on the final exam, and GPA. No signup, 100% private browser tool. AI gets grade math wrong - we don't.
Percentage Calculator - Find %, Increase, Decrease & Difference
Free percentage calculator online. Calculate X% of Y, increase/decrease, reverse percentage, and add/subtract percent. Instant results, no signup.
Speech Time Calculator - Words to Minutes & Speaking Time
Free speech time calculator. Convert words to minutes and seconds at standard speaking rates (100-238 wpm). Paste text, set WPM, add pause buffer. No signup. AI hallucinates speech times.
Work Hours Calculator - Free Time Card & Timesheet
Free work hours calculator with overtime, break deductions & payroll. Supports 12h/24h time. No signup. AI cannot do precise time math - we do.