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Ton to Kg vs OneRepMax

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Ton to Kg compared with OneRepMax
DetailTon to Kg logo Ton to KgOneRepMax logo OneRepMax
What it doesFree, real-time converter for tons to kilograms with exact SI constants Free one rep max calculator with seven formulas and percentage charts
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Free
Pricing100% free, no signup required Not given
Key features
  • Real-time conversion as you type
  • Supports three ton types: metric, US short, and UK long
  • Displays exact conversion constant with every result
  • No signup, no account required
  • Bidirectional conversion toggle between tons and kilograms
  • Seven 1RM formulas (Epley, Brzycki, Lombardi, Lander, Mayhew, O'Conner, Wathen)
  • Average of all formulas as recommended result
  • Percentage chart from 100% to 50% of 1RM
  • Rep-max table for 1RM through 12RM
  • Support for kilograms and pounds
  • Exercise-specific formula defaults
  • RPE adjustment for reps in reserve
  • Multiple exercise categories (chest, back, legs, shoulders, arms, Olympic)
  • Browser-based history with no account
  • Warm-up sets calculator and rep-max table
What makes it different
  • Uses exact SI conversion constants rather than rounded approximations
  • All calculations run client-side with no server calls or data storage
  • Defaults to metric ton, the international standard
  • Completely transparent methodology
  • Uses seven published formulas instead of one, showing average and range for transparency
  • No account, sign-up, or data storage required
  • Covers dozens of exercises with exercise-specific guidance and lift variations
  • Warns about formula accuracy limits and when estimates are unreliable
  • Includes linked tools for related calculations (DOTS, Wilks, training max, FFMI, VO2)
Community votes00
DR (Domain Rating by Ahrefs)6 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)170
Citation Flow (Majestic)70
Referring domains (Majestic)250

4 details filled in for both companies.

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