Find LCM of number sets for scheduling cycles and fraction denominators. Sync 4-day and 6-day rotas every 12 days — free, local, no signup.
Find the greatest common factor (GCF/GCD) of number sets via Euclidean algorithm with steps. Reduce 48:180 to 4:15 correctly — free, local, no signup.
Convert any date to its day-of-year number (1–365/366) with days remaining. Developers compute ordinal dates for logs and filenames — free, no signup, runs locally.
Count working days between two dates excluding weekends — HR teams prorate leave and payroll accurately. A 20-day leave request spans 28 calendar days — free, no signup, runs locally.
Log daily calories with one-tap common foods and a running total — simple intake tracking that works. See the day add up as you eat — free, local, no signup.
Downscale a batch of images to one max width (default 1920px) with an optional bottom-right watermark, then download everything as a ZIP. Same max-width and watermark apply to every image — local Canvas work, 3 free images a day.
Every 12 days (LCM of 4 and 6) — rosters, maintenance windows, and billing cycles sync on multiples. Enter periods to find convergence.
Common denominators are LCMs of denominators: 1/4 + 1/6 needs denominator 12. Fraction homework starts here.
Multiple numbers fold pairwise like GCF. Prime powers dominate — include each prime's max exponent once.
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Greatest Common Factor Calculator
Find the greatest common factor (GCF/GCD) of number sets via Euclidean algorithm with steps. Reduce 48:180 to 4:15 correctly — free, local, no signup.
Prime Factorization Calculator
Break any integer into prime factors with factor trees — 60 = 2²×3×5 shown stepwise. Ace number theory homework — free, local, no signup.
Last updated October 2026