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Scale Conversion Calculator Scale Conversion Calculator Convert real-world dimensions to scale model size and back. Supports any ratio (1:24, 1:35, 1:48, 1:72, 1:87, 1:100, etc.) with mixed units and direct scale-to-scale conversion. 1. Choose mode & scale Conversion mode Real → Model Model → Real Enter a real-world dimension and get the scaled model size. Common scales Select a preset (optional) HO – 1:87 N – 1:160 Z – 1:220 O – 1:48 1:24 – Large car models 1:25 – Car models 1:32 – Aircraft, figures 1:35 – Military 1:48 – Aircraft 1:72 – Aircraft, armor 1:144 – Small aircraft 1:50 – Architecture 1:100 – Architecture 1:200 – Site plans 1:500 – Master plans 1:1000 – Maps Custom scale ratio 1 : Example: for 1:35 scale, enter 35 . Convert between two scales (optional) Already have a model in one scale and want to convert it to another? Enable this and choose both scales. Enable scale → scale conversion Original scale (1 : n) Target scale (1 : n) 2. Enter measurement Measurement (real size) mm cm m in ft Output unit mm cm m inches feet Convert Result – Tip: You can type values like 12.7 or 1/4 (fractions) in the measurement box. Popular scales quick reference 1:24 – 1 cm model = 24 cm real 1:35 – 1 mm model ≈ 35 mm real 1:48 – 1 inch model = 4 ft real 1:72 – 1 cm model = 72 cm real 1:87 (HO) – 1 mm model ≈ 87 mm real 1:160 (N) – 1 cm model = 1.6 m real How the scale conversion calculator works A drawing or model scale is usually written as 1:n . That means 1 unit on the model equals n units in real life , regardless of which unit you use. Real → Model Given real size \( L_\text{real} \) and scale 1 : n: \[ L_\text{model} = \frac{L_\text{real}}{n} \] Model → Real \[ L_\text{real} = L_\text{model} \times n \] Example: 4.8 m car at 1:24 scale Convert 4.8 m to mm: \( 4.8 \text{ m} = 4800 \text{ mm} \). Apply scale 1:24: \[ L_\text{model} = \frac{4800}{24} = 200 \text{ mm} \] The model car should be 200 mm (20 cm) long. Converting between two scales Sometimes you have a dimension already drawn or built in one scale and you want it in another (for example, converting a 1:72 plan to 1:48). The steps are: Convert from original scale back to real size. Convert from real size to the new scale. Original scale 1 : \( n_1 \), target scale 1 : \( n_2 \), model length \( L_1 \): \[ L_\text{real} = L_1 \times n_1 \] \[ L_2 = \frac{L_\text{real}}{n_2} = L_1 \times \frac{n_1}{n_2} \] So you can multiply the original model length by \( \dfrac{n_1}{n_2} \) directly. Worked example: 1:72 to 1:48 A wing is 100 mm long on a 1:72 drawing. What should it be at 1:48? \( n_1 = 72 \), \( n_2 = 48 \), \( L_1 = 100 \text{ mm} \) \( L_2 = 100 \times \dfrac{72}{48} = 100 \times 1.5 = 150 \text{ mm} \) The wing should be 150 mm on the 1:48 drawing. Common modeling, architecture, and map scales Model railroading HO (1:87) – most popular model railway scale. N (1:160) – smaller, good for limited space. Z (1:220) – very small, portable layouts. Plastic models & miniatures 1:24

Scale Conversion Calculator Scale Conversion Calculator Convert real-world dimensions to scale model size and back. Supports any ratio (1:24, 1:35, 1:48, 1:72, 1:87, 1:100, etc.) with mixed units and direct scale-to-scale conversion. 1. Choose mode & scale Conversion mode Real → Model Model → Real Enter a real-world dimension and get the scaled model size. Common scales Select a preset (optional) HO – 1:87 N – 1:160 Z – 1:220 O – 1:48 1:24 – Large car models 1:25 – Car models 1:32 – Aircraft, figures 1:35 – Military 1:48 – Aircraft 1:72 – Aircraft, armor 1:144 – Small aircraft 1:50 – Architecture 1:100 – Architecture 1:200 – Site plans 1:500 – Master plans 1:1000 – Maps Custom scale ratio 1 : Example: for 1:35 scale, enter 35 . Convert between two scales (optional) Already have a model in one scale and want to convert it to another? Enable this and choose both scales. Enable scale → scale conversion Original scale (1 : n) Target scale (1 : n) 2. Enter measurement Measurement (real size) mm cm m in ft Output unit mm cm m inches feet Convert Result – Tip: You can type values like 12.7 or 1/4 (fractions) in the measurement box. Popular scales quick reference 1:24 – 1 cm model = 24 cm real 1:35 – 1 mm model ≈ 35 mm real 1:48 – 1 inch model = 4 ft real 1:72 – 1 cm model = 72 cm real 1:87 (HO) – 1 mm model ≈ 87 mm real 1:160 (N) – 1 cm model = 1.6 m real How the scale conversion calculator works A drawing or model scale is usually written as 1:n . That means 1 unit on the model equals n units in real life , regardless of which unit you use. Real → Model Given real size \( L_\text{real} \) and scale 1 : n: \[ L_\text{model} = \frac{L_\text{real}}{n} \] Model → Real \[ L_\text{real} = L_\text{model} \times n \] Example: 4.8 m car at 1:24 scale Convert 4.8 m to mm: \( 4.8 \text{ m} = 4800 \text{ mm} \). Apply scale 1:24: \[ L_\text{model} = \frac{4800}{24} = 200 \text{ mm} \] The model car should be 200 mm (20 cm) long. Converting between two scales Sometimes you have a dimension already drawn or built in one scale and you want it in another (for example, converting a 1:72 plan to 1:48). The steps are: Convert from original scale back to real size. Convert from real size to the new scale. Original scale 1 : \( n_1 \), target scale 1 : \( n_2 \), model length \( L_1 \): \[ L_\text{real} = L_1 \times n_1 \] \[ L_2 = \frac{L_\text{real}}{n_2} = L_1 \times \frac{n_1}{n_2} \] So you can multiply the original model length by \( \dfrac{n_1}{n_2} \) directly. Worked example: 1:72 to 1:48 A wing is 100 mm long on a 1:72 drawing. What should it be at 1:48? \( n_1 = 72 \), \( n_2 = 48 \), \( L_1 = 100 \text{ mm} \) \( L_2 = 100 \times \dfrac{72}{48} = 100 \times 1.5 = 150 \text{ mm} \) The wing should be 150 mm on the 1:48 drawing. Common modeling, architecture, and map scales Model railroading HO (1:87) – most popular model railway scale. N (1:160) – smaller, good for limited space. Z (1:220) – very small, portable layouts. Plastic models & miniatures 1:24

Calculators in Scale Conversion Calculator Scale Conversion Calculator Convert real-world dimensions to scale model size and back. Supports any ratio (1:24, 1:35, 1:48, 1:72, 1:87, 1:100, etc.) with mixed units and direct scale-to-scale conversion. 1. Choose mode & scale Conversion mode Real → Model Model → Real Enter a real-world dimension and get the scaled model size. Common scales Select a preset (optional) HO – 1:87 N – 1:160 Z – 1:220 O – 1:48 1:24 – Large car models 1:25 – Car models 1:32 – Aircraft, figures 1:35 – Military 1:48 – Aircraft 1:72 – Aircraft, armor 1:144 – Small aircraft 1:50 – Architecture 1:100 – Architecture 1:200 – Site plans 1:500 – Master plans 1:1000 – Maps Custom scale ratio 1 : Example: for 1:35 scale, enter 35 . Convert between two scales (optional) Already have a model in one scale and want to convert it to another? Enable this and choose both scales. Enable scale → scale conversion Original scale (1 : n) Target scale (1 : n) 2. Enter measurement Measurement (real size) mm cm m in ft Output unit mm cm m inches feet Convert Result – Tip: You can type values like 12.7 or 1/4 (fractions) in the measurement box. Popular scales quick reference 1:24 – 1 cm model = 24 cm real 1:35 – 1 mm model ≈ 35 mm real 1:48 – 1 inch model = 4 ft real 1:72 – 1 cm model = 72 cm real 1:87 (HO) – 1 mm model ≈ 87 mm real 1:160 (N) – 1 cm model = 1.6 m real How the scale conversion calculator works A drawing or model scale is usually written as 1:n . That means 1 unit on the model equals n units in real life , regardless of which unit you use. Real → Model Given real size \( L_\text{real} \) and scale 1 : n: \[ L_\text{model} = \frac{L_\text{real}}{n} \] Model → Real \[ L_\text{real} = L_\text{model} \times n \] Example: 4.8 m car at 1:24 scale Convert 4.8 m to mm: \( 4.8 \text{ m} = 4800 \text{ mm} \). Apply scale 1:24: \[ L_\text{model} = \frac{4800}{24} = 200 \text{ mm} \] The model car should be 200 mm (20 cm) long. Converting between two scales Sometimes you have a dimension already drawn or built in one scale and you want it in another (for example, converting a 1:72 plan to 1:48). The steps are: Convert from original scale back to real size. Convert from real size to the new scale. Original scale 1 : \( n_1 \), target scale 1 : \( n_2 \), model length \( L_1 \): \[ L_\text{real} = L_1 \times n_1 \] \[ L_2 = \frac{L_\text{real}}{n_2} = L_1 \times \frac{n_1}{n_2} \] So you can multiply the original model length by \( \dfrac{n_1}{n_2} \) directly. Worked example: 1:72 to 1:48 A wing is 100 mm long on a 1:72 drawing. What should it be at 1:48? \( n_1 = 72 \), \( n_2 = 48 \), \( L_1 = 100 \text{ mm} \) \( L_2 = 100 \times \dfrac{72}{48} = 100 \times 1.5 = 150 \text{ mm} \) The wing should be 150 mm on the 1:48 drawing. Common modeling, architecture, and map scales Model railroading HO (1:87) – most popular model railway scale. N (1:160) – smaller, good for limited space. Z (1:220) – very small, portable layouts. Plastic models & miniatures 1:24.

Scale Conversion Calculator

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