| Singular | Dual | Plural |
| Nominative |
रथकल्पकः
rathakalpakaḥ
|
रथकल्पकौ
rathakalpakau
|
रथकल्पकाः
rathakalpakāḥ
|
| Vocative |
रथकल्पक
rathakalpaka
|
रथकल्पकौ
rathakalpakau
|
रथकल्पकाः
rathakalpakāḥ
|
| Accusative |
रथकल्पकम्
rathakalpakam
|
रथकल्पकौ
rathakalpakau
|
रथकल्पकान्
rathakalpakān
|
| Instrumental |
रथकल्पकेन
rathakalpakena
|
रथकल्पकाभ्याम्
rathakalpakābhyām
|
रथकल्पकैः
rathakalpakaiḥ
|
| Dative |
रथकल्पकाय
rathakalpakāya
|
रथकल्पकाभ्याम्
rathakalpakābhyām
|
रथकल्पकेभ्यः
rathakalpakebhyaḥ
|
| Ablative |
रथकल्पकात्
rathakalpakāt
|
रथकल्पकाभ्याम्
rathakalpakābhyām
|
रथकल्पकेभ्यः
rathakalpakebhyaḥ
|
| Genitive |
रथकल्पकस्य
rathakalpakasya
|
रथकल्पकयोः
rathakalpakayoḥ
|
रथकल्पकानाम्
rathakalpakānām
|
| Locative |
रथकल्पके
rathakalpake
|
रथकल्पकयोः
rathakalpakayoḥ
|
रथकल्पकेषु
rathakalpakeṣu
|