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Both calculators run independently — change the inputs on either side to compare results.

Beam Deflection Calculator

Compute the maximum mid-span deflection of a simply supported beam under a uniformly distributed load (UDL) using δ = 5wL⁴ / (384EI). The standard structural-design check for serviceability — verifies whether a beam stays within deflection limits like L/250 or L/360 under service loads.

Uniform Load (N/m)

Beam Length (m)

Modulus of Elasticity (MPa)

Moment of Inertia (cm⁴)

Fill in the required fields to see your result.

Civil

Steel Weight Calculator

Calculate the total weight of steel reinforcement bars (rebar) given their diameter, length, and quantity. Standard quantity-take-off tool for reinforced concrete, using the well-known d²/162 formula derived from steel's density.

Bar Diameter (mm)

Length (m)

Number of Bars (nos)

Fill in the required fields to see your result.

Key differences

	Beam Deflection Calculator	Steel Weight Calculator
Category	Civil	Civil
Inputs required	4	3
Result	Maximum Deflection (mm)	Total Steel Weight (kg)
What it does	Compute the maximum mid-span deflection of a simply supported beam under a uniformly distributed load (UDL) using δ = 5wL⁴ / (384EI). The standard structural-design check for serviceability — verifies whether a beam stays within deflection limits like L/250 or L/360 under service loads.	Calculate the total weight of steel reinforcement bars (rebar) given their diameter, length, and quantity. Standard quantity-take-off tool for reinforced concrete, using the well-known d²/162 formula derived from steel's density.