Setting a custom plate size in Metric Lift
Tell Metric Lift the diameter of your largest plate when it is not a 45 cm bumper, so bar speed stays accurate.
Measure the largest plate on your bar, enter its diameter, and Metric Lift scales every rep to that size. Metric Lift works out distance from the plate’s diameter, so a wrong size gives wrong bar speeds. The default is a standard 45 cm (17.7 in) Olympic or bumper plate.
Know when to change it
If every lift uses standard 45 cm bumper or Olympic plates, leave the default on. Set a custom size when the largest plate on the bar is any of these:
- A change plate. When a small plate is the largest on the bar, enter its size. Change plates are much smaller than 45 cm.
- A rubber-coated or tri-grip plate. Diameter varies by brand, so measure it.
- A 1-inch gym plate. These come in many sizes.
- A tracking disc. For an exercise without plates, fit a tracking disc and enter its diameter.
Metric Lift only uses the largest plate on the bar. With two 20 kg bumpers and a 5 kg change plate outside them, set the size for the bumpers.
Measure across the full face of the plate with a tape measure. Round to the nearest centimetre.
Set the size before you record
- Open the recording screen.
- Tap Plate size. The button shows the current diameter.
- Switch off Use default.
- Enter the diameter in centimetres. It must be more than 10 cm.
Metric Lift keeps this size for every set until you switch the default back on. When you import a video, set the size on the setup screen instead. See Importing video.
Check the plate preview
Before you record, the preview rings the plate that Metric Lift expects to track. The ring can jump between the large and small plates while you frame the shot. That does not matter. Once the bar moves, Metric Lift tracks the largest moving plate.
When it goes wrong
- Wrong size. You cannot change the plate size after the set. Record or import the set again.
- The size stays on. Switch the default back on before you train with standard plates again.
- Round plates. A custom size works for round plates and tracking discs. Put a round plate on the camera side.