Bead String Planner
Estimate bead count along a length with spacer and clasp allowances.
Your inputs
Calculation results
Formula & assumptions
Beads = floor((target−clasp+spacer)/(bead+spacer)); assumes one spacer between beads.
Values use the specified units. Calculations use floating-point arithmetic. Check input measurements and formula assumptions before applying the result.
Compare your scenarios
Save up to five results to compare changes side by side. Scenarios stay in this tab until you clear or reload it.
Using Bead String Planner
Estimate bead count along a length with spacer and clasp allowances.
- Enter target length, bead width, spacer width, clasp allowance using the units printed under each field.
- Choose Calculate, or enable live updates. Review the result labels and formula assumptions.
- Save scenarios to compare up to five variations, then copy the report or download JSON or CSV.
Example
Target length: 180 millimeters Bead width: 8 millimeters Spacer width: 1 millimeters Clasp allowance: 15 millimeters Beads: 18 Spacers: 17 Assembled length · millimeters: 176
Questions & answers
What does Bead String Planner calculate?
Estimate bead count along a length with spacer and clasp allowances.
Which units should I enter?
Target length uses millimeters. Bead width uses millimeters. Spacer width uses millimeters. Clasp allowance uses millimeters. Convert values to these units before calculating.
Which formula does it use?
Beads = floor((target−clasp+spacer)/(bead+spacer)); assumes one spacer between beads.
What does the included example show?
Target length: 180 millimeters; Bead width: 8 millimeters; Spacer width: 1 millimeters; Clasp allowance: 15 millimeters. Result: Beads = 18; Spacers = 17; Assembled length · millimeters = 176.
Can I compare different settings?
Yes. Save a scenario, change the inputs and save another result. Up to five scenarios are compared in this tab; they disappear when you reload or leave.
Can I export the calculation?
Copy the JSON report or download JSON and CSV with inputs, result labels and numeric values. Processing uses local JavaScript; no calculation request is sent to our server. Displayed values use up to 10 significant digits; exports retain JavaScript numeric precision.
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