The Filler Metal Consumption Calculator finds weight of welding electrodes or welding wire necessary to complete a given weld joint. 
INSTRUCTIONS: Choose units and enter the following:
- (W) Weight per Foot of Weld Metal
- (L) Length of Weld
- (E) Deposition Efficiency
Weight of Electrode or Wire Required (`R`): The calculator returns the answer in pounds. However this can be automatically converted to compatible units via the pull-down menu.
The Math / Science
For estimates of electrode or wire consumption, view the following table for average values of deposition efficiency:
| Process | Deposition Efficiency |
|---|---|
| Submerged Arc | 99% |
| Gas Metal Arc (98% A; 2% O2) | 98% |
| Gas Metal Arc (75% A; 25% CO2) | 96% |
| Gas Metal Arc (CO2) | 93% |
| Metal Cored Wires | 93% |
| Gas-Shielded Flux Cored Wires | 86% |
| Self-Shielded Flux Cored Wires | 78% |
| **Shielded Metal Arc (Stick 12" long) | 59% |
| **Shielded Metal Arc (Stick 14" long) | 62% |
| **Shielded Metal Arc (Stick 18" long) | 66% |
**Includes 2" stub loss.
To find the amount of welding electrodes or wire necessary, use the formula: 
R = W ⋅ L / E
where:
- `R` = weight of welding electrode or wire required
- `W` = weight per foot of weld metal
- `L` = length of weld
- `E` = deposition efficiency
Welding Calculators and Constants
- Bend Allowance Calculator
- Weight of Aluminum Square Bars
- Steel Wire Deposition Rate Calculator
- Welding Heat Input Calculator
- Groove Weld Potential Root Cracking Calculator
- Weight of Hot Rolled Steel Flats
- Modulus of Elasticity for Martensitic Stainless Steel
- Brinell Hardness of Gray Cast Iron
References
ESAB (https://www.esabna.com/euweb/fm_handbook/577fm8_1.htm)
A Beginner's Guide to the Steel Construction Manual, 13th ed. (https://www.bgstructuralengineering.com/BGSCM13/Contents.htm)