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New & featured
- Inflation Calculator | CPI buying power by year | CalcBE Adjust an amount between years using U.S. CPI-U annual averages. See the start index, end index, price-level change, source, and finance disclaimer.
- Calories Burned Calculator | MET activity estimate | CalcBE Estimate calories burned from body weight, activity MET, and minutes. Switch kg/lb, see the MET formula, source, and health disclaimer.
- Pet Age Calculator | Dog and cat age in human years | CalcBE Estimate dog or cat age in human years and life stage from species, age, and dog size. Includes limits for breed, body size, and individual health...
- Roman Numeral Converter | Numbers to Roman and back | CalcBE Convert integers to Roman numerals and Roman numerals back to numbers. Validates standard notation from 1 to 3999 and shows the I, V, X, L, C, D, M...
- Epoch Converter | Unix timestamp to UTC and local time | CalcBE Convert Unix epoch seconds or milliseconds to UTC and local time, or parse ISO 8601 dates back to timestamps. Includes copyable results and timezone...
- Streak Probability Simulator | Consecutive Wins or Losses | CalcBE Estimate the chance of consecutive wins or losses, expected streak starts, and likely longest streaks in one browser-only calculator.
- Deadline Countdown Calculator | Remaining Days, Business Days & Hours | CalcBE See remaining calendar days, business days, and business hours until a deadline in one page. Use local deadline rules, weekend presets, and holiday...
- CSV Column Profiler | Inspect column types, missing values, and next chart steps | CalcBE Paste CSV or TSV data to inspect column types, missing values, unique counts, and next chart or stats options.
- Expected Value Simulator | Theory vs Random Trials | CalcBE Compare theoretical expected value, variance, and simulated averages for coin flips, dice, or simple lottery-style setups with one shareable browser...
- Meeting Time Overlap Finder | Shared Work Hours Across Cities | CalcBE Find overlapping meeting windows across two to four cities, compare local times, and share the best candidate slot without opening a full meeting...
Trending now
- Weighted Random Picker & Randomizer | Seeded Weighted Draws | CalcBE
Use this weighted random picker and randomizer to draw winners by weight, ratio, or raffle entries.
- Long Division Calculator with Steps | Remainders | CalcBE
Divide numbers with steps long division. Get the quotient, remainder, optional decimals, and each subtraction row.
- Business Days & Countdown Calculator | Skip Weekends | CalcBE
Count calendar or business days between two dates, exclude custom weekend patterns and holiday lists, and jump.
- Date Difference Calculator (days, business days, Y/M/D) | CalcBE
Compute days between dates, count business days and working hours, and see a year‑month‑day breakdown.
- Online Alarm Clock | Browser Alarm with Snooze | CalcBE
Set alarms in your browser without installing apps. Supports repeats, snooze, sound, notifications, and fullscreen.
- Loan & Mortgage Calculators: Payment, Schedule | CalcBE
Estimate payments, compare amortization schedules, and check affordability (DTI) with browser-only loan & mortgage calculators.