Training tools
Strength calculators built for real gym decisions
Use the same quick tools lifters rely on between sets: estimate 1RM, convert RPE, load a barbell correctly, and plan warmups before heavy work.
Example output
Sample estimate from a normal work set
This page shows a fixed example so you can understand the output shape. The full editable calculator stays inside the app.
100 × 5 @ 8
123.3
70%: 86
75%: 92
80%: 99
85%: 105
[Tools]
Fast answers for common training questions
Each page gives a direct answer, a fixed example, and a clear next step back into structured training inside IronFlow.
[Tool]
E1RM calculator
Estimate a practical one-rep max from weight, reps, and RPE.
[Tool]
RPE ↔ % converter
Convert target RPE into working percentages and back again.
[Tool]
Plate calculator
Work out exact plates per side before you walk to the bar.
[Tool]
Warmup planner
Build a simple warmup ladder from your top working set.