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Peptulator vs OneRepMax

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

Peptulator compared with OneRepMax
DetailPeptulator logo PeptulatorOneRepMax logo OneRepMax
What it doesFree peptide reconstitution and dosing calculator with no signup required 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
PricingNot given Not given
Key features
  • 27 peptide compound presets
  • Reconstitution concentration calculator
  • Insulin syringe unit converter
  • Bidirectional mg to units conversion
  • Printable dosing charts and schedules
  • Titration schedule tools
  • Publicly available formulas and methodology
  • No account or signup required
  • Browser-based calculator with no data transmission
  • Free Protocol Pack downloadable PDF
  • 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
  • Independent and vendor-neutral with no affiliate links or ads
  • Transparent mathematics with open formulas on every page
  • Automated test suite run before each deploy ensures accuracy
  • All calculations performed locally in browser with zero data collection
  • Comprehensive support for 27 peptide compounds across multiple categories
  • 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)7 +1 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)10
Citation Flow (Majestic)350
Referring domains (Majestic)600

4 details filled in for both companies.

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